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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-08T03:20:19Z
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-31T02:19:15Z
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  track: Dvořák: Piano Quintet in A Major, Op. 81, B. 155: III. Scherzo. Furiant
  track: Dvořák: Piano Quintet in A Major, Op. 81, B. 155: IV. Finale. Allegro
  track: Schubert: Piano Quintet in A Major, Op. Posth. 114, D. 667 "The Trout": I. Allegro vivace
  track: Schubert: Piano Quintet in A Major, Op. Posth. 114, D. 667 "The Trout": II. Andante
  track: Schubert: Piano Quintet in A Major, Op. Posth. 114, D. 667 "The Trout": III. Scherzo. Presto
  track: Schubert: Piano Quintet in A Major, Op. Posth. 114, D. 667 "The Trout": IV. Tema con variazione. Andantino
track: Ferré / Transc Ducros: Colloque sentimental
track: String Quartet in G Minor, Op. 10: II. Assez vif et bien rythmé
track: Trenet / Transc Ducros: Chanson d'automne
track: String Quartet in G Minor, Op. 10: III. Andantino (Doucement expressif)
track: Chabrier / Transcr. Ducros: Fisch-Ton-Kan: Air. "Qui je suis, qui je suis" (Fisch-Ton-Kan)
track: String Quintet No. 3 in C Major, K. 515: II. Menuetto. Allegretto
track: String Quartet in G Minor, Op. 10: I. Animé et très décidé
track: Arlen: Somewhere Over the Rainbow (from "The Wizard of Oz")
track: String Quintet No. 3 in C Major, K. 515: IV. Allegro

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Dvořák: Piano Quintet in A Major, Op. 81, B. 155: III. Scherzo. Furiant
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T23:51:35Z
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Dvořák: Piano Quintet in A Major, Op. 81, B. 155: IV. Finale. Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T05:17:02Z
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Schubert: Piano Quintet in A Major, Op. Posth. 114, D. 667 "The Trout": I. Allegro vivace
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T18:23:33Z
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T21:00:46Z
audio: Schubert: Piano Quintet in A Major, Op. Posth. 114, D. 667 "The Trout": II. Andante
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Schubert: Piano Quintet in A Major, Op. Posth. 114, D. 667 "The Trout": III. Scherzo. Presto
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duration: PT4M33S
duration ms: 273680
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by artist: Quatuor Ébène
by artist: Menahem Pressler
in album: Menahem Pressler - A 90th Birthday Celebration - Live in Paris
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  date published: 2014-11-10
popularity: 0
genre: classical
genre: classical-piano
genre: chamber-music
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T21:25:57Z
audio: Schubert: Piano Quintet in A Major, Op. Posth. 114, D. 667 "The Trout": III. Scherzo. Presto
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Schubert: Piano Quintet in A Major, Op. Posth. 114, D. 667 "The Trout": IV. Tema con variazione. Andantino
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duration: PT8M18S
duration ms: 498080
explicit: false
by artist: Franz Schubert
by artist: Quatuor Ébène
by artist: Menahem Pressler
in album: Menahem Pressler - A 90th Birthday Celebration - Live in Paris
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  date published: 2014-11-10
popularity: 3
genre: classical
genre: classical-piano
genre: chamber-music
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additional property: CopyrightID
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T21:35:24Z
audio: Schubert: Piano Quintet in A Major, Op. Posth. 114, D. 667 "The Trout": IV. Tema con variazione. Andantino
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Ferré / Transc Ducros: Colloque sentimental
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duration: PT3M26S
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by artist: Léo Ferré
by artist: Philippe Jaroussky
by artist: Jerome Ducros
by artist: Quatuor Ébène
in album: Passion Jaroussky
  type: MusicAlbum
  date published: 2019-10-25
popularity: 5
isrc code: GBAYC1402760
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-07T14:04:01Z
audio: Ferré / Transc Ducros: Colloque sentimental
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String Quartet in G Minor, Op. 10: II. Assez vif et bien rythmé
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duration: PT4M1S
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explicit: false
by artist: Claude Debussy
by artist: Quatuor Ébène
in album: Debussy - Thursday Evening
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  date published: 2021-01-21
popularity: 4
genre: classical
genre: impressionism
genre: post-romantic-era
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09294d281ad59ab41cedf32b62e02340b0ffac5b2daef098fbd06d8936dddbc9. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0801965.
  date published: 2026-07-29T13:38:16Z
audio: String Quartet in G Minor, Op. 10: II. Assez vif et bien rythmé
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Valence (Positivity)
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Trenet / Transc Ducros: Chanson d'automne
type: MusicRecording
duration: PT2M52S
duration ms: 172853
explicit: false
by artist: Charles Trenet
by artist: Philippe Jaroussky
by artist: Jerome Ducros
by artist: Quatuor Ébène
in album: Passion Jaroussky
  type: MusicAlbum
  date published: 2019-10-25
popularity: 4
genre: chanson
genre: variete-francaise
genre: french-jazz
isrc code: GBAYC1402789
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b019b65dcc0f47227f882e6def67207d9f4c21c62f6645d9ff47d0f62c8715. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1402789.
  date published: 2026-07-08T03:20:19Z
audio: Trenet / Transc Ducros: Chanson d'automne
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  additional property: Danceability
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  additional property: Acousticness
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  additional property: Valence (Positivity)
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String Quartet in G Minor, Op. 10: III. Andantino (Doucement expressif)
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duration: PT8M18S
duration ms: 498746
explicit: false
by artist: Claude Debussy
by artist: Quatuor Ébène
in album: Debussy - Thursday Evening
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  date published: 2021-01-21
popularity: 3
genre: classical
genre: impressionism
genre: post-romantic-era
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additional property: CopyrightID
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c67273da5ac47f6e03da1dbfd1300ac9fcc22307c8a1004fdba89dd6b1f35e. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0801966.
  date published: 2026-07-29T22:48:59Z
audio: String Quartet in G Minor, Op. 10: III. Andantino (Doucement expressif)
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  additional property: Tempo (BPM)
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Chabrier / Transcr. Ducros: Fisch-Ton-Kan: Air. "Qui je suis, qui je suis" (Fisch-Ton-Kan)
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duration: PT2M34S
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by artist: Emmanuel Chabrier
by artist: Philippe Jaroussky
by artist: Ebène Quartet Male Choir
by artist: Jerome Ducros
by artist: Quatuor Ébène
in album: Passion Jaroussky
  type: MusicAlbum
  date published: 2019-10-25
popularity: 3
isrc code: GBAYC1402773
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T15:42:38Z
audio: Chabrier / Transcr. Ducros: Fisch-Ton-Kan: Air. "Qui je suis, qui je suis" (Fisch-Ton-Kan)
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String Quintet No. 3 in C Major, K. 515: II. Menuetto. Allegretto
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duration: PT5M32S
duration ms: 332949
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Antoine Tamestit
by artist: Quatuor Ébène
in album: Klassik: Die schönste klassische Musik
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popularity: 2
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: String Quintet No. 3 in C Major, K. 515: II. Menuetto. Allegretto
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String Quartet in G Minor, Op. 10: I. Animé et très décidé
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duration: PT6M25S
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by artist: Quatuor Ébène
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popularity: 1
genre: classical
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T20:45:02Z
audio: String Quartet in G Minor, Op. 10: I. Animé et très décidé
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Arlen: Somewhere Over the Rainbow (from "The Wizard of Oz")
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explicit: false
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by artist: Quatuor Ébène
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popularity: 1
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f16a294e766c6d79be065237fb3550be0c3f23f911119f0b9a3efe8bbca1767. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1001220.
  date published: 2026-07-08T03:20:19Z
audio: Arlen: Somewhere Over the Rainbow (from "The Wizard of Oz")
  type: AudioObject
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String Quintet No. 3 in C Major, K. 515: IV. Allegro
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duration: PT7M19S
duration ms: 439877
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by artist: Wolfgang Amadeus Mozart
by artist: Antoine Tamestit
by artist: Quatuor Ébène
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  date published: 2023-08-18
popularity: 1
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8fea19177946091f6bb51d298d8c6e81f474f1fc03e768a3f6ce91e473ec05. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC2201771.
  date published: 2026-07-08T03:20:19Z
audio: String Quintet No. 3 in C Major, K. 515: IV. Allegro
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